Evaluating the Effects of AC Ripples on the Degradation of Lead Acid Battery

Abstract

The growing use of battery-powered electric cars and equipment has sparked worries about the possible influence of charging station harmonics on battery deterioration. The lead acid battery is a well-known alternative among the different types of consumer batteries available. Despite having a low energy density, it is nonetheless commonly utilized due to its ease of use and inexpensive cost. Lead acid batteries are widely used in electric rickshaws, uninterruptible power supply (UPS), and home appliances in Bangladesh. Recognizing the rising concern about the impact of AC ripples on battery health, we conducted a thorough experimental analysis in our study to explore the impacts of different frequency harmonics on gel-type lead acid batteries. On lead acid batteries, frequencies of 100Hz, 1kHz, and pure DC have been measured. The experiment is repeated 35 cycles in constant current charging circumstances until a substantial change in battery performance is seen. For a more accurate conclusion, the deterioration is compared to numerous characteristics, such as internal resistance and discharge capacity. The effect of AC harmonics on battery deterioration was shown to be more pronounced at the lower frequency of 100Hz, as internal resistance rose from 71m to 96m and discharge capacity decreased from 3.682Ah to 2.721Ah. Significant increases in both measurements showed faster aging and deterioration in the battery charged at 100.